or a pedicure, but now, some surprises, ABC's Reena ninan looks at what really goes on at some nail salons. Reporter: The new fashion statement on the red carpet -- nails, with their own dedicated camera, the mani cam. Nail salons are a growth industry, now $8.2 billion a year, but there can be hidden dangers. Jennifer Schnipper would go twice a month for her mani/pedis, until she had an infection. I was in extreme pain, I couldn't walk. Reporter: She was rushed to the hospital where a doctor immediately asked her if she'd had a pedicure. I guarantee you this is a micro bacterium infection that you get from pedicure spa baths. Reporter: The bacteria had spread to her muscle, it had to be cut out in an emergency surgery. We took our hidden cameras to nail salons in New York and Houston. We found a manicurist cleaning her own nails and then using the same cotton on ours. That white chalk probably someone else's dead skin. The razor-sharp instrument banned in at least 45 states, still in use. And get this, a rotary device meant to drill and sand wood, used on woman's foot. But that's not all, possibly living in the footbaths fungus, E. Coli, and other bacteria. This Arizona state board of cosmetology inspector checks nail salons. This salon owner who says he has cleaned up his act, will probably get a $250 fine. Experts told us the best protection is for the salon to use plastic liners and for you to have no cuts when you go in. Basic precautions so you're polished and ready for your close-up. Arena ninan, ABC, Houston. And when we come back -- heading into our weekend. This Friday. Our "Instant index" and one tiny

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